【正文】 9. Using mixing velocity of liquid for control of reaction velocity is required for feeding the cleaning agent, to prevent the cleaning agent spilled over the equipment. 10. 清洗時(shí)，施工人員不得擅自脫離清洗崗位或串崗，睡崗，嚴(yán)格執(zhí)行巡回檢查制度，按時(shí)準(zhǔn)確無誤記錄。 6. Open fire and smoking should be prevented on site, in case of preparing to fire, approval certificate must be managed. It can be allowed to prepare for firing after it is qualified through analysis. 7. 聯(lián)接清洗設(shè)備前，必須辦理檢修證，由甲方確定簽 字后，方可進(jìn)行施工，將被清洗設(shè)備與配液箱、循環(huán)泵進(jìn)行聯(lián)接。 construction workers have to wear safety helmet on field, fastening safety rope when climbing, to make well antiskidding measure and to prevent them from highaltitude falling. 4. 檢查急救箱、急救藥品是否備齊。 5. Dynamic testing can be performed on field for PH value in sewage discharge. 十二、 注意事項(xiàng) 十二 . Attention ，由施工負(fù)責(zé)人組織學(xué)習(xí)清洗方案，任務(wù)分工，使每個(gè)施工人員明確自己的職責(zé)及任務(wù)。 2. Corrosion rate can be determined through weight loss method stipulated in GB/T251472020 Test Method of Metal Corrosion Amount and Corrosion Rate of Chemical Cleaning for Industrial Equipment Gravimetric Method, the quality of test piece is the same as that of coiler。 4. Prefilming effect: red dot inspection method＞ 5S。 temporary end cap and blind plate are detached and meters and valves and etc are all recovered as before. 八、清洗廢液的處理 八 . Waste fluid disposal 設(shè)備化學(xué)清洗過程中，各種廢液的排放指標(biāo)應(yīng)符合《工業(yè) “三廢 ”排放試行標(biāo)準(zhǔn) BG73》的要求才能排放。 Oil flushing equipment can be connected after the pipe is pletely purged, with precision oil filter filled with qualified flushing oil, and circulating oil pump is opened for removal of overhead air, enabling the pipe to be filled with circulating oil liquid. In case a certain oil tank on the vessel can be used as a temporary circulating oil tank, it should be pletely cleaned up before use. Rate of flow, temperature rise, filtering and other technical conditions of oil flushing equipment conform to the requirements of oil flushing in the system. The differential pressure on the filter should be inspected once every 12 hours, with contaminated filter elements timely cleaned up. Filter element can be used with the sequence of higher position to lower one, in case the filter element at higher position can be used for 2 hours and without filtered impurities kept on inner surface, filtering precision and filter paper closest to filter element can be attached on the surface of filter element. Oil flushing process is pleted after the surface of filter paper cannot be contaminated for 2 hours consecutive circulating process. 、消耗材料 Consumable material 泵前粗濾濾芯、回油中濾濾芯、回油精濾濾芯、磁棒、檢查精密濾紙、潤滑油沖洗油、輕質(zhì)柴油。如使用船舶某個(gè)油箱作為沖洗臨時(shí)循環(huán)油 箱的，應(yīng)徹底清洗干凈才能投入使用。不能馬上投油的管道應(yīng)密封保護(hù)。 Standard corrosion carbon steel coupon 、工藝條件 Process conditions 溫度 常溫 Temperature: normal temperature 流速 1m/s Flow rate: 1m/s 時(shí)間 1224 小 時(shí) Time: 1224 hours 、防銹鈍化處理 Antirust, passivation 因考慮清洗后管道無法立即投入使用，防止因停放時(shí)間過長引起管道返銹的問題出現(xiàn)，有效延長管道返銹時(shí)間。 It is intended for removal of oil impurities and oxidized rust deposit which is difficult to be eliminated during the water flushing process, enabling the metal to expose its active surface, which it paves the way for prefilming process. According to the requirement of budgeting, threeinone cleaning agent is added into the system by several times, PH value or Fe2+ can be measured once every 20min. The flushing process is pleted after changes of PH value and Fe2+ concentration id determined. Flushing time: 2448 hours. A large volume of drainage water can be discharged, with fresh water supplemented after pletion of flushing process. We can take next step after turbidity degree is decreased up to 10NTU below. 主劑 Primary chemical agent 有機(jī)螯合劑、分散劑、滲透劑、表面活性劑等成分組成； Organic chelating agent, dispersing agent, perant, surface active agent and other ingredients。為預(yù)膜打好基礎(chǔ)。 The required piping system is filled with washing water before flushing pump is opened。 Relevant flushing oil at work as well as light diesel oil 三合一螯合清洗劑 Threeinone chelating cleaner 鈍化防銹劑 Passivating antirust agent 清管球配套 Equipped with spherical pigs 七、 化學(xué)清洗、油沖洗的步驟 七 . Procedures of chemical cleaning, oil flushing 本次化學(xué)清洗程序如下： The chemical cleaning procedure is shown as follows: 循環(huán)系統(tǒng) 連接及試壓 → 水沖洗 → 脫脂除銹清洗 → 防銹鈍化處理→ 吹掃通球 → 連接串油設(shè)備 → 油沖洗 → 驗(yàn)收復(fù)位。兩臺 根據(jù)管徑確定流量和壓力 Special Oil flushing equipment two sets rate of flow: 65m179。: two sets, 65m179。 按乙方施工要求，由甲方將循環(huán)回路與設(shè)備無關(guān)的部位隔離。 light diesel oil can be used as flushing oil for fuel piping system. 六、 化學(xué)清洗前的準(zhǔn)備工作。 this chemical cleani